Crash and memory disclosure via wrapped length check
Published Dec 5, 2025 · Updated Jan 29, 2026
Out-of-bounds read in Duc before 1.4.6 allows remote attackers to crash the tool or disclose adjacent stack data via malformed input. In buffer_get in src/libduc/buffer.c, an unsigned subtraction in the length check can wrap, causing memcpy to read beyond the remaining buffer. Exploitation requires attacker-controlled data to reach a Duc database or another input stream consumed by the affected routine.
Summary
What happened
Out-of-bounds read in Duc before 1.4.6 allows remote attackers to crash the tool or disclose adjacent stack data via malformed input. In buffer_get in src/libduc/buffer.c, an unsigned subtraction in the length check can wrap, causing memcpy to read beyond the remaining buffer. Exploitation requires attacker-controlled data to reach a Duc database or another input stream consumed by the affected routine.
The record
- CVE
- CVE-2025-13654
- Published
- Dec 5, 2025
- Updated
- Jan 29, 2026
- Vendor
- zevv
- Product
- Duc
- Classifications
- CWE-787
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 5, 2025CVE publishedPublication date reported by the CVE source.
- Jan 29, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <1.4.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Stack Buffer Overflow in Duc proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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